In 2014, Tyson will host a reboot of the famed TV show "Cosmos," originally hosted by astronomer and writer Carl Sagan. The original program focused on exploring broad scientific ideas like the origin of life, and humanity's place in a vast universe.

Tyson is no stranger to television. He hosted five seasons of the educational science show "NOVA scienceNOW" on PBS, and he often makes guest appearances on news and commentary programs like "The Daily Show" and "Real Time with Bill Maher."

Although Tyson might be the latest space-obsessed tweeter to garner 1 million followers, he isn't the first. Veteran spaceflyer Michael Massimino (@Astro_Mike) not only surpassed 1 million followers, he was also the first NASA astronaut to tweet from space.